Presentation 1998/1/22
Optical intensity distribution of thermally-induced diffraction rings from an absorbing solution and its temporal response
Yasuo YOKOTA, Kazuhiko OGUSU,
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Abstract(in English) We present an experimental and theoretical study of diffraction rings of an Ar^+ laser beam from a nitrobenzene solution of BDN caused by a change in the refractive index due to a thermal effect. A cw incidence and a square-pulse train incidence are used in this study. For the cw incidence, we compare the measured ring patterns with the theoretical results based on the Fraunhofer diffraction. It is found that the amplitude and phase shift profiles of the beam are broadened owing to self-defocusing and thermal diffusion. For the pulsed incidence, we derive the temporal change in the temperature rise of the absorbing liquid. We can observe distinct rings when the repetition of the incident pulse is faster than the relaxation time due to the thermal diffusion.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) diffraction rings / spatial self-phase modulation / thermal effect
Paper # LQE97-132
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Conference Information
Committee LQE
Conference Date 1998/1/22(1days)
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Registration To Lasers and Quantum Electronics (LQE)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Optical intensity distribution of thermally-induced diffraction rings from an absorbing solution and its temporal response
Sub Title (in English)
Keyword(1) diffraction rings
Keyword(2) spatial self-phase modulation
Keyword(3) thermal effect
1st Author's Name Yasuo YOKOTA
1st Author's Affiliation Faculty of Engineering, Shizuoka University()
2nd Author's Name Kazuhiko OGUSU
2nd Author's Affiliation Faculty of Engineering, Shizuoka University
Date 1998/1/22
Paper # LQE97-132
Volume (vol) vol.97
Number (no) 497
Page pp.pp.-
#Pages 6
Date of Issue